[Elecraft] K2 Kit Questions

[Don Wilhelm]

  Phil,

For me, that is an awfully wide filter for CW.  I normally tune CW with 
a filter set to 700 Hz.  a 2.4kHz wide filter hears a lot more of the 
band - too much for me.

OTOH, there are some operators who like to use a wide filter to hear a 
lot of what is going on around their frequency.  If you are in that 
class and have a good "filter between the ears", then by all means use 
it that way.

I might point out one other disadvantage of using the wide filter for 
CW.  If a strong signal is on the band say 1500 Hz away from the weaker 
signal you are trying to copy, your mind may be able to easily separate 
the two, but that strong signal is also activating the AGC and all 
signals in the passband will be reduced in strength because of it.  That 
is why narrow "roofing filters" are offered for the K3 - even though the 
DSP can create a narrow filter, the hardware AGC is still responding to 
the strongest signal in the passband.  The same argument applies to the K2.

73,
Don W3FPR

On 2/8/2011 10:39 AM, Phil Hystad wrote:
> A possible follow-up question --- one recommendation I received (indirectly out of band from this group) was that the SSB option was useful for the wider filter even if you do not plan to do SSB.  I have yet to read through all of the K2 manual (my next project) so I don't know much about the filters on the K2 so far.
>
> 73, phil, K7PEH
>